<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>盒子模型之边框</title>
    <style>
        div {
            width: 600px;
            height: 300px;
            /* border-width边框粗细 单位取px值=像素值 */
            border-width: 5px;
            /* solid实线，dashed虚线，dotted点线 */
            border-style: solid;
            background-color: pink;

        }
    </style>
</head>
<body>
    <div></div>
</body>
</html>